tachometer trouble

High Gear

.040 Over
Joined
Mar 8, 2010
Messages
56
It seems the last couple/three times out my tach will have a mind of it's own.

If it acts up it is only at start up and will be 3 or 4 thousand optimistic with very little movement from then on regardless of real engine speed.

Original battery and has been on a float charger during the winter.

Any ideas are welcome, thanks.
 
I can't make time this weekend to even look at it but I'll check out those wires and I'll keep you in mind skip thanks.
 
Sorry, I was thinking old tech they used to take the tach signal from the coil. It is probably the crank angle sensor that signals the tach through the ECU.
 
idk said:
Are you sure? I haven't checked, but the new TuneBoy programme can make the tacho do different things such as showing throttle position.
Click to expand...
Rather clever that! - If they come up with a way to make the speedo/tacho needles visible at night - Then I'll be impressed.

If I find a cheap instrumentation loom or the loom connector block (I don't like hacking original bits) - I'll be fitting decent "clocks".
 
Coil input wires are always worth checking ANYWAY.. looked at mine after firing issues, the input leads were VERY slack!! take them off & crimp up with pliers.
 
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